Just to clarify that, the actual fastener hex size should suit the imperial spanners you can easily buy. Its the actual imperial bolts from the hardware store that are harder to get spanners for. They have UNC/WIT threads but the average home DIY does not have the correct BS/wit spanners for the hex sizes those bolts have, so most resort to using metric on them. So if the common imperial spanners you can get from a hardware/auto store do not fit the fasteners then it most likely means many of the fasteners are not correct and have been changed because the T140 should have SAE hex sizes (same as what you would use on a Harley) and use common available SAE spanners. Many of the bolts that screw into alloy can be interchanged from UNC to WIT but the hex sizes change so i suspect that's probably what has been done in some places. There was a cross over where some british bikes had mixtures of SAE and BS but that was earlier. Some of the smaller less than 1/4 fasteners might still be BA or UNEF (UN extra fine) threads so keep that in mind if any threads smaller than 1/4 need any sort of attention but 99% should be UNF or UNC threads on those models.
